From Destinypedia, the Destiny wiki
This weapon is commonly being cited as a "proper heavy machine gun" for various reasons, being able to keep up with the likes of Xenophage and 21% Delirium in raw damage output alone is one of them. The addition of a free Arc shield definitely helps add to the weapon's idea of a "Colossus fantasy" but it should be reminded that this shield requires your own shield (which many people forget is separate from a player's actual health) to be fully replenished before it can activate. If the wielder is constantly kept at critical health, it won't perform that much better compared to any other machine gun. Another downside to Heir Apparent that may detract some players is the fact that it can only be hip-fired; there is no aim or zoom command whatsoever for this weapon.
Upgrades this weapon to a Masterwork. It will generate Orbs on multikills and gain a tracker that displays the number of combatants defeated with it. The Masterworked weapon will also receive additional capabilities.
Defeat enemies using this weapon to unlock this upgrade.
The Red Legion will march again. —Caiatl
Caiatl stands in her war room.
Her nation, which she has always loved, reeks of failure. The scent is strong. When she was young, she would watch the feedings in her father's zoological gardens. Live creatures from the lands beyond Torobatl, wounded, left in the middle of the landscaped enclosures. She'd seen how the smell of blood brought the larger, hungrier creatures out of the undergrowth. The same will happen to the Empire if she lets it.
But she will not.
She won't fail where her father failed. He was led astray by his vices, corrupted by frivolity and pleasure. He was never meant to be Emperor; he was too weak. But Ghaul was destroyed by weakness, too. His fixation on the machine god was stupid. It embarrasses her to think of him.
She has always had a vivid imagination. Ironically, it's her father she can thank for that—all of the stories and songs he made her study, the insufferable plays. But she repurposes that arsenal of thought toward a new goal: imagining a better future for her people. A future where they rule the galaxy once again; where foreign ships fall under their fire and rival nations fall to their knees. This future will be different.
This future will be hers.